Factory OE Nox Trap Temperature Sensor or Nox Sensor. In the rear position.
Fits 2013-2016 6.7L Powerstroke.
A NOx adsorber or NOx trap (also called Lean NOx trap, abbr. LNT) is a device that is used to reduce oxides of nitrogen (NO and NO2) emissions from a lean burn internal combustion engine by means of adsorption.
Image not exact part. For reference only.
Ford part number: DC3Z-9D378-B (or DC3Z9D378B)